Function
- A funtion is a named part of program with smaller size which is used to perform a specific task.
- It can be called any number of times.
- The Def keyword is used to define a function.
- Function block begin with the keyword Def followed by the function name and parentheses(()) ends with colon and followed by block of statements.
Creating A Funtion
def my_function():
#function header
print("hello world") #function body
Calling A Function
def my_function():
#function header
print("hello world") #function body
my_function()
#function call
Program Routine
In python,program routine are called as "function"
Function is majorly classified into two types:
- Built-in function
- User-defined function
Built-In Function
Built-in function are built into an application and can be used by end
users.
Python has several built-in functions, such as:
- print()
- input()
- len()
- clear()
- copy()
User Defined Function
Users can create their own function called user defined function.
Additionally On Functions
- Value returning function
- non-value returning function
Value Returning Function:
In this type of function it return back some values to the function
call.
Program:
def myfunction(number):
return 10*number
print(myfunction(10))
print(myfunction(20))
print(myfunction(30))
print(myfunction(40))
print(myfunction(50))
Output:
100
200
300
400
500
Non value Returning Function:
This type of function does not return back any values to the function
call.
Program:
def myfunction(number):
print(5*number)
(myfunction(10))
(myfunction(20))
(myfunction(30))
(myfunction(40))
(myfunction(50))
Output:
50
100
150
200
250
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